Magnetic Effects Of Current Question 5
Question 5 - 2024 (27 Jan Shift 1)
Two long, straight wires carry equal currents in opposite directions as shown in figure. The separation between the wires is $5.0 cm$. The magnitude of the magnetic field at a point $P$ midway between the wires is $\mu T$
(Given : $\mu _0=4 \pi \times 10^{-7} TmA^{-1}$ )
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Answer: (160)
Solution:
$B=\left(\frac{\mu _0 i}{2 \pi a}\right) \times 2=\frac{4 \pi \times 10^{-7} \times 10}{\pi \times\left(\frac{5}{2} \times 10^{-2}\right)}$
$=16 \times 10^{-5}=160 \mu T$
